Tubes foe papee shell



(No Model.) 9 SheetsSheet 1.

W. MASON. AUTOMATIC MACHINE FOR BURNISHING TUBES FOR PAPER SHELLCARTRIDGES. No. 587,133. Patent Tn: Norms PETERS cu, Puorouma, WASNINGIon, n, c.

(A10 Model.) 9 Sheets-Sheet 2. W. MASON.

AUTOMATIC MACHINE FOR BURNISHING TUBES FOR PAPER SHELL CARTRIDGES.

Patented July 27, 1897.

THE uoams wnzns w. PHDTD-umo" WASHINGTON, o c.

(No Model.) 9 Sheets-Sheet 3. W. MASON.

AUTOMATIC MACHINE FOR BURNISHING TUBES FOR PAPER SHELL CARTRIDGES. No.587,133. Pa.tented July 27, 1897.

(No Model.) 9 Sheets-Sheet 4.

W. MASON. AUTOMATIC MACHINE FOR BURNISHING TUBESgFOR PAPER SHELLCARTRIDGES. No. 587,133. Patented July 27, 1897.

m: Nonms Psvzns co. mom-uwq, WASNINDYUN. u. c.

(No Model.) 9 Sheets-Sheet 5.

w. MASON. A AUTOMATIC MACHINE FOBABURNISHING TUBES FOR .PAPERSHELLCARTRIDGES. No. 587,133. Patented July 27, 1897.

11110., wAsnlNGTON o c (No Model.) 9 Sheets-Sheet 6.

W. MASON. "AUTOMATIC MACHINE FOR BU'RNISHING'TUBES FOR PAPER SHELLCARTRIDGES. No. 587,133.. Patented July 27, 1897;

(No Model.) 9 Sheets-Sheet 7.

Y W. MASON. 7 AUTOMATIC MACHINE FOR BURNISHING TUBES FOR PAPER SHELLCARTRIDGES. No. 587,133. Patented July 27, 1897.

ms uunms rmn: co. mom-umu. wxsmun'rom n. c

(No Model.) 9 Sheets-Sheet 9.

v w. MASON.

AUTOMATIC MACHINE FOR BURNISHING TUBES FOR PAPER SHELL CARTRIDGES.

"No. 587,133. Paten ted July 27, 1897.

UNIT-ED STATES PATENT @rricn.

I \VILLIAM MASON, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THEVVINGIIESTER REPEATING ARMS COMPANY, OF SAME PLACE.

AUTOMATIC MACHINE FOR BURNISHING TUBES FOR PAPER-SHELL CARTRIDGES.

SPECIFICATION forming part of Letters Patent No. 587,133, dated July27', 1897.

Application filed August 5, 1895. Serial No. 558,227. (No model.)

New Haven, in the county of New Haven and State of Connecticut, haveinvented a new Improvement in Automatic Machines for Burnishing Tubesfor Paper-Shell Cartridges; and I do hereby declare the following, whentaken in connection with the accompanying.

drawings and the letters of reference marked thereon, to be a full,clear, and exact description of the same, and which said drawingsconstitute part of this specification, and

represent, in

Figure 1, a view in side elevation of one form which an automaticburnishing-machine constructed in accordance with my invention mayassume; Fig. 2, an end view of the machine, lookingtoward the drivingconnections thereof, the pitman employed to transmit the power of themain shaft C to the operating-lever F having been omitted from thisfigure for the sake of clearness Fig. 3,aview of the machine in verticaltransverse section, looking toward the tube-feeding mechanism thereof;Fig. 4, a detached view, in side elevation, of the hopper; Fig. 5,abroken view thereof in end elevation; Fig. 6, a detached view, in endelevation and on a larger scale, of one pair of the tube-holding jaws;Fig. 7, a detached plan view of one of the knuckle-joint plates employedfor operating the said jaws; Fig. 8, a similar end view of the plate;Fig. 9, a detached plan view of the fellow of the knucklejoint plateshown in Figs. 7 and S; Fig. 10, a similar end view of the plate; Fig.11, a plan view of one of the links employed with the said plates; Fig.12, an edge view thereof; Fig. 13, a plan view of the plates and linkswhen combined and shown as spread out flat for perspicuity; Fig. 14, adetail .view, in transverse section, looking at the front face of theoscillating arbor-head; Fig. 15, a sectional View, in front elevation,of the feed-roll carriage; Fig. 16, a view of the feed-roll carriage onthe line a b of Fig. 15; Fig. 17, a detached enlarged view, in verticalsection, of the burnishin g mechanism; Fig. 17', a broken sectionalview, on a larger scale, of the forward ends of the auxiliary tube andjaws of the stripping mechanism; Fig. 18, a detached view, in frontelevation, of the die head or to it.

chuck which contains the burnishing-dies; Fig. 19,,a detached view, incentral longitudinal section, of the stripping-jaws; Fig. 20, a viewthereof in front elevation; Fig. 21, a detached view,in centrallongitudinal section, of the spring-tube; Fig. 22, a detached View ofone of the burnishing-jaws; Fig. 23, a detached view of the double-pathcam, looking at the intersection of its paths and the shifting mechanismlocated thereat; Fig. 24:, a detached plan view of the two shiftingcams;

Fig. 25, a detached'view of the cams in side adapted to be operated withthe minimum of attention.

WVith these ends in view my invention consists in the combination, withtube feeding and burnishing mechanisms, of an automatically-operatedarbor to remove the tubes one by one from the tube-fe edin g mechanismand present them to the action of the burnishing mechanism.

My invention further consists in certain details of construction andcombinations of parts, as will be hereinafter described, and pointed outin the claims.

In carrying out my invention I employ, as shown, tube-feeding mechanismcomprising a hopper A, containing an arched deflector A, which shuntsthe tubes introduced into it in opposite directions and into twoparallel depending vertical chutes A and A secured In the opening at thelower end of each chute I locate two vertically-adjustable stops orposts A A arranged in the same vertical plane and having their upperends concaved to receive the tubes, which descend upon them through thechutes and which they combine to support in a horizontal position. Ialso provide each chute with a pair of horiwith two wearing-plates D Dseparated from each other and receiving between them the beveled upperedge of an oscillating bar D supported at its respective ends by twoarms D one of which is seen in Fig. 3. The said arms D are rigidlysecured to and depend from the opposite ends of the shaft D The said armD wearing-plates D D bar D and arms D D connect the arbor-head D withthe shaft D whereby the arbor-head partakes of the rocking movement ofthe shaft. The parts mentioned take the place of a spline or featherconnection between the arbor-head and rock-shaft, though in one View ofthe construction the bar D may be considered as a flying or detachedfeather or spline, its distant location from the shaft securing a longand advantageous leverage. Thesaid rock-shaft D is rocked by means of acrank-arm D secured to and projecting upward from its rear end andpivotally connected with the inner end of alink D the outer end of whichis adjustably connected with the upper end of the main operating lever Dwhich is hung upon a stud D provided at its lower end with anantifrictionroll D which alternately travels in two intersecting pathscl and (1, formed in the double-path cam d mounted upon the main shaft0. At the intersection of the said paths d and d I locate two shiftingearns 62 and 61 provided at their outer ends with pivots d and d, bymeans of which they are pivotally mounted in the double-path cam 01aforesaid. These shifting cams d and d are coupled together at a pointbelow the bottoms of the intersecting paths d and d by means of a doubleyoke d swinging on a central pivot d and having each of its endsconstructed with a slot d d, receiving-blocks 01 d swiveled upon pivotsd d, respectively mounted toward the outer ends of the said cams. Underthis construction one shifting cam will always stand across one of thetwo paths, while the other shifting cam will complete the wall of theother path. Now as the double-path cam d revolves one of the shiftingcams or the other will strike the antifrictionroll D whereby the saidshifting cam will be deflected and pushed out of the way to make apassage for the roll. The movement of this shifting cam will betransmitted through the coupling-yoke to the other shifting cam,whichwill be correspondingly moved across the other path and into position tostrike the said roll when the double-path cam d is about completinganother revolution.

forth once for every two'revolutions of the main shaft 0. In otherwords, it requires one revolution of the main shaft 0 to cause theantifriction-roll D to make the circuit of one of the paths d of the camand another complete revolution to cause the said roll to make thecircuit of the other path d of the cam. This double-path cam might beconstructed in other ways than shown or its place might be taken by twocams, but the construction represented is very simple, compact, andeffective.

The carriage is actuated back and forth by means of the main or carriagelever F, which is connected at its upper end to the carriage and by acompound pitman F with the wrist F of the crank F of the main shaft 0aforesaid. The said compound pitman F is composed of two parallel rodsunited at their ends by boxes, one of which receives the wristpin Fbefore mentioned and the other of which receives apin F mountedtransversely in the lever F, as clearly shown in Fig. 2, from which thepitman has been omitted, so as to clearly show the wrist-pin F andtransverse pin F For driving the said main shaft I mount upon it aworm-gear E, which meshes into a worm E mounted upon the driving-shaft Eand carrying a frictionclutch pulley E over which a power-belt is ledfrom any convenient source of power and which coacts with afriction-clutch E mounted on the same shaft and comprising clutchleversE E and a movable clutch-head E, which is engaged with and actuated bythe forked lower end of an operating-lever E the upper end of which isconnected with a long starting-rod E arranged for horizontalreciprocation under the bed of the machine and having its opposite endfurnished with a starting-handle E A spring E connected with the lever Eand with the frame of the machine, exerts a constant effort to operatethe lever, so as to cause the clutch to release the driving-pulley E andpermit the same to rotate freely on the driving-shaft, thus stopping themachine.

To provide for automatically stopping the machine in the case ofaccident, I employ a safety mechanism comprising an adjustablecoupling-block G,mounted upon the startingrod E and having its loweredge beveled and coacting with the beveled upper edge of a safety-blockG,located at the upper end of the vertically-movable safety-rod G thelower end of which is attached to the horizontal arm G of a bellcranklever, the depending vertical arm G of which is engaged with the outerend of the stem G of a longitudinallymovable block G mounted in bearingsG and connected by a link G with the lower end of the main lever F. Aspring G encircles the stem G5 and is interposed between the bearing orboX G and the washer G mounted upon the extreme outer end of the stemand adjusted thereon through the medium of the jam-nuts G G It will beapparent from the foregoing description that the load upon the upperportion of the lever during the inward movement thereof will in partfall upon the spring G and that if on account of any accident or forother cause the load is greater than the resistance of the spring tocompression the same will be compressed and the block G together withits stem G, will move inward, causing the arm G2 of the bell-crank leverto move inward and the arm G thereof to be moved downward, whereby thesafety-rod G will be drawn downward and the couplingblock G at its upperend disengaged from the coupling-block G, leaving the spring E free tooperate the lever E in throwing off the clutch and stopping the machine.

Between the arbor-carriage and the burnishing mechanism I locate afeed-roll carriage H, which is normally stationary, but which may bemoved outward 011 the machinebed for convenience of access to theburnishing mechanism. This carriage carries two grooved feed-rolls H Harranged in the same horizontal plane and mounted upon the upper ends ofvertical shafts H H each of which is furnished at its lower end with abevel-gear II II, both of which take into a double bevelgear H Fig. 15,mounted on a shaft H provided at one of its ends with a small pinion Hmeshing into a rack H held down upon the pinion by an antifrictionrollH. The said rack H is arranged horizontally and secured at its rear endto the carriage D whereby the rotation of the rolls II and H alwayscorresponds exactly to the rate at which the arbor-carriage and hencethe arbors move. The shafts H H are j ournaled, as shown in Fig. 16, ineccentric bushings H hi, normally clamped against rotation by means ofclamping-screws H H, extending transversely through the upper end of thecarriage H, which is chambered, as at II II, to receive said bushings,and split, as at H H to be clamped thereupon.

It will be obvious that by releasing and rotating the bushings theshafts H H may be moved toward or away from each other, and hence thefeed-rolls H and H between which the arbors pass, the bushings beingreleased by reversing the clamping-screws H H before mentioned.

In the forward movement of the arbors the rolls frictionally engage withthe shells upon the arbors and assist in supporting them and feedingthem into the burnishing mechanism, the rolls being rotated, as beforementioned, at the same rate at which the carriage moves forward, so thattheir operation is always in harmony with its operation. In the outwardmovement of the carriage the rolls are rotated in reverse direction andidly. For the purpose of securing the carriage in its proper position Iprovide it with a locating-pin H, the inner end of which takes into asmall socket formed for it in right position in a portion of the bed ofthe machine. By drawing the said pin H outward, so as to clear it fromthe said socket, the carriage is free to be slid outward on the bed E ofthe machine, so as to make the burnishing mechanism more convenient ofaccess.

The burnishing mechanism is located in line with the feed-rolls andcentrally between the two chutes of the tube-feeding mechanism andcomprises two burnishing-dies I I, a detached view of one of which isshown in Fig. 22. These dies are located in a transverse slot 1, formedin the circular die-head 12, and are adjusted back and forth, asrequired, by means of adjusting-screws 13 13. The inner face of thedie-head 12 is furnished with an internally-threaded projecting hub 14,which adapts it to be screwed upon the projecting forward end of aspindle J, supported in suitable bearings J, one of which is shown inFig. 17, which also shows a packing J of Babbitt metal, for the saidspindle to run in.

The tube-stripping mechanism is located in line wit-l1 and directly inrear of the burnishing mechanism. It comprises a non-rotatable tube K,located within the spindle J and projecting from the rear end thereof,as shown in Fig. 17, the said projecting end of the tube being supportedand held against rotation bya stationary clip K. The forward end of thestationary tube K does not extend to the forward end of the spindle, butis reduced in diameter and externally threaded to form a hub K whichreceives the internallythreaded inner end of an auxiliary tube K theforward end of which projects slightly beyond the forward end of thespindle and is constructed with an inwardly-projecting double'facedannular rib, the outer bevel 7c of which serves to center the burnishedtubes and direct them into the stationary tube, while the inner bevel 7cof the rib coacts with the stripping-jaws L and L, which strip theburnished tubes from the arbors. The said jaws L and L are semicircularin form and constructed so as to have slight lateral play toward andaway from each other, their outer ends being constructed with spreadingbevels Z, contracting bevels l, and gripping-shoulders Z The inner endsof these jaws rest against the outer end of a tube L the inner end ofwhich extends into the threaded neck K of the tube K.

The outer face of the tube L is cut away for the reception of a spiralspring L one end of which impinges against an exterior annular shoulder1 formed at the forward end of the said tube L and the inner end ofwhich rests upon the end of the threaded neck K This spring exerts aconstant effort to force the jaws forward and cause their contractingbevels Z to coact with the bevel of the auxiliary tube K whereby theforward ends of the jaws are drawn toward each other.

It will be understood that the arbors pass the tubes through thefeed-rolls and thence to the burnishing-dies, which revolve around thetubes with great velocity and condense and polish them. Then when theouter ends of the tubes enter between the jaws they strike the spreadingbevels Z thereof, causing the jaws to move longitudinally inward againstthe tension of the spring L and also to move laterally outward,permitting the passage of the tubes into the stationary tube K.

When the arbors have carried the inner ends of the tubes beyond thestripping-jaws, the same move inward and engage with the said ends ofthe tubes, causing them to be stripped from the arbors when the samemove outward again.

In Figs. 19 and 20 the stripping-jaws are represented in the positionswhich they will assume when pushed back by an incoming tube andseparated preparatory to gripping the tube for stripping it from thearbor.

A pulley M, mounted uponthe spindle J, provides for rotating the same ata high rate of speed.

Although the operation of the difierent features of my improved machinehave been described in connection with the detailed description of theirconstruction, it may be well to state that in the operation of themachine as a whole the tubes to be burnished are fed into the hopper byan attendant, after which they gravitate downward through the two chutesof the hopper, in which chutes. they form two vertical columns of tubes,the lower tube of each column resting upon the stops located below theopen lower ends of the chutes. When the machine is started, it will beunderstood that the carriage is recipro cated back and forth upon themachine-bed, carrying the arbor-head with it, and that the arbor-head isalso oscillated back and forth independently of the carriage and at aright angle to the movement thereof. When the arbor-head is swung to thelimit of its movement in one direction, it is moved forward, whereby oneof its arbors moves under one chute to take the lowermost tube of thecolumn therein, while at the same time the other arbor passes inward andsubjects the tube which it carries to the action of the burnishingmechanism, supposing that the arbor last mentioned has previously takenthe lowermost tube of the column in the other chute. Now when thecarriage makes its outward excursion with the arbor-head in its sameposition the arbor which has just been entered into a tube Withdraws thesame from under the chute, while the tube which has just been burnishedis stripped from the other arbor. The arbor-head is now swung to thelimit of its other position, after which the carriage makes its inwardexcursion, whereby the tube last picked up, so to speak, is burnished,and whereby the other arbor is entered into the lowermost tube in theother chute. The carriage now makes its outward excursion, whereby theburnished tube is stripped from one arbor, while the tube last picked upis removed from the chute. The arbor is then swung back to the otherlimit of its oscillatin g movementand the carriage moved inward again,and so on. It will thus be seen that for every inward excursion of thecarriage one arbor picks up a tube, while the other arbor burnishes apreviously-picked-up tube, and for every outward excursion of thecarriage the tube picked up is withdrawn from under the chute, whereitwas obtained, and the tube just burnished stripped from the other arbor.

It will be seen from the foregoing that the action of my improvedmachine is purely automatic except so far as the introduction of loosetubes into the hopper is concerned.

It is apparent that in carrying out my invention some changes in theconstruction herein shown and described may be made, and I would have itunderstood that I do not limit myself to the exact combination setforth, but hold myself at liberty to make such alterations as fallwithin the spirit of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

. 1. In an automatic machine for burnishing tubes for paper-shellcartridges, the combination with a tube-feeding mechanism having twochutes, of a burnishing mechanism, and tWo automatically-operated arborswhich act alternately in removing tubes from the respective chutes andthen presenting them to the action of the burnishing mechanism,substantially as described.

2. In an automatic machine for burnishing tubes for paper-shellcartridges, the combination with a tube-feeding mechanism having twochutes, of a burnishing mechanism, an

oscillating head carrying two arbors, and means for reciprocating thesaid head toward and away from the said tube feeding and bu rnishingmechanisms and for oscillating it, substantially as described, andwhereby while one arbor is preparing to remove a tube from one chute theother arbor is presenting a tube removed from the other chute to theburnish ing mechanism and vice versa.

In an automatic machine for burnishing tubes for paper-shell cartridges,the combination with a tube-feeding mechanism having two chutes, of aburnishing mechanism located centrally between the said chutes, an

oscillating head, two parallel arbors carried thereby, means forreciprocating the said head toward and away from the said chutes andmechanism and for oscillating it, and a stripping mechanism located inthe rear of and in line with the burnishing mechanism, substantially asdescribed.

4:. In an automatic machine for burnishing tubes for paper-shellcartridges, the combination with tube feeding and burnishing mechanisms,of an automatically-operated arbor to remove the tubes from onemechanism and subject them to the action of the other, and

fecdrolls through which the arbor passes the tubes on their way to theburnishing mechanism, substantially as described.

5. In an automatic machine for burnishing tubes for paper-shellcartridges, the combination with a hopper, of a vertically-arrangedchute leading downward therefrom, two vertically-arranged pivotal jawslocated below the open lower end of the chute, means for actuating thesaid jaws,'an arbor which is entered into a tube while the same isgripped by the said jaws, means for automatically operating the saidarbor, a bu rnishing mechanism to the action of which the tube on thearbor is subjected after it is withdrawn by the arbor from said jaws,and a stripping mechanism for stripping the tube from the arbor after ithas been burnished thereupon.

6. In an automatic machine forburnishing tubes for papersnellcartridges, the combination with a hopper provided with a chute, ofstops consisting of vertically-adjustable posts having their upper endsconcaved and located below the opening at the lower end of the chute,for receiving the tubes from the chute, vertically-arranged pivotal jawsextending above the said stops for closing upon the tube supportedthereby, an arbor which is entered into the tubes when they are grippedby the jaws, a burnishing mechanism to the action of which the tubes aresubjected by the arbor, and means for stripping the burnished tubes fromthe arbor.

'7. In an automatic machine for burnishing tubes for paper-shellcartridges, the combination with a tube-feeding mechanism having twochutes, of a burnishing mechanism located between the said chutes, anarbor-head provided with two arbors, means for reciprocating the saidhead toward and away from the chutes and burnishing mechanism, and meansfor oscillating the head and supporting it at the limit of each end ofits oscillating movement, so that for every inward excursion of the headit is changed in position so as to alternately present its tubes to thechutes and burnishing mechanism.

8. In an automatic machine for burnishing tubes for paper-sh ellcartridges, the combination with tube feeding and burnishing mechanisms,of an automatically-reciprocated arbor which transfers the tubes one byone from the tube-feeding mechanism to the burnishing mechanism,feed-rolls between which the arbor passes the rolls 011 their way to theburnishing mechanism, and means for actuating the rolls in harmony withthe speed of the reciprocation of the arbor, substantially as described.

9. In an automatic machine for burnishing tubes for paper-shellcartridges, the combination with a feeding mechanism, of an arbor whichremoves the tubes one by one from the feeding mechanism, a pair offeed-rolls, a burnishin g mechanism, a reciprocating carriage for thearbor, and a rack attached to the said carriage and geared to thefeed-rolls which are therefore actuated in harmony with the movement ofthe carriage back and forth, substantially as described.

10. Inanautomaticmachineforburnishing tubes for paper-shell cartridges,the combination with a burnishing mechanism, of a reciprocatingarbor-carriage, and a fcedroll carriage interposed between theburnishing mechanism and the arbor-carriage, and provided with twofeed-rolls, substantially as described.

11. In anautomaticmachine forluirnishing tubes for paper-shellcartridges, the combination with tube feeding and burnishing mechanisms, of a carriage, means for reciprocating the said carriage,whereby it is moved toward and away from the said mechanisms, arockshaft extending parallel with the movement of the carriage, anarbor-head provided with two arbors and connected with the carriage foroscillation in a plane at a right angle to the linein which the samereciprocates, means for rocking the said shaft, and connection betweenthe shaft and head, whereby the latter is oscillated by the formerindependent of its movement back and forth with the carriage.

12. In an automatic machine for burnishing tubes for paper-shellcartridges, the combination with tube feeding and burnishing mechanisms,of a carriage, means for reciprocating the said carriage whereby it ismoved toward and away from the said mechanisms, a rockshaft extendingparallel with the movement of the carriage, an arbor-head provided withtwo arbors and connected with the carriage for oscillation in a plane ata right angle to the line in which the same reciprocatcs, means forrocking the said shaft, two arms eonnected with the shaft, a bar carriedby the said arms, and an arm connected with the said oscillating headand having sliding connection with the said bar, whereby the oscillationof the shaft is transmitted to the head for the oscillation thereof.

13. In an automatic machine for burnishing tubes for paper-shellcartridges, thecombination with a tube-feeding mechanism, of an arbor, areciprocating carriage therefor, a lever connected with the saidcarriage for reciprocating the same back and forth, means for operatingthe said lever, a spring connected with the lower end of the lever, andyielding in case of accident, a friction-clutch, a spring exerting aconstant effort to operate the same, and means actuated by thecompression of the spring for permitting the spring last mentioned toact in throwing off the clutch and stopping the machine, substantiallyas described.

14:. In an automatic machine forburnishing tubes for paper-shellcartridges, the combination with a tube-feeding mechanism, of aburnishin g mechanism, an oscillating arbor-head provided with twoarbors, a reciprocating carriage to which the said head is attached,

means for reciprocating the carriage, and means for oscillating thehead, including a cam having two paths which intersect each other, twoshifting cams located at the intersection of the said paths, and acoupling-yoke connecting the said cams, whereby when one cam is retiredthe other is brought into operating position, substantially asdescribed.

15. In an automatic machine for burnishin g tubes for paper-shellcartridges, the combination, in a burnishing mechanism, with twoburnishing-dies, of a die-head in which the same are mounted, a hollowspindle to which the die-head is attached, a non-rotatable tube enteringthe said hollow spindle, an auxiliary tube secured to the forward end ofthe said non-rotatable tube, and having its forward end beveled, twosemicircular jaws located within the auxiliary tube, and having theirforward ends adapted to coact with the bevv eled forward ends thereof,and a spring acting upon the said jaws, and tending to push the sameforward so as to force them together, substantially as described.

16. In a machine for burnishing tubes for paper-shell cartridges, atube-feeding mechanism having a hopper, a chuteleading downwardtherefrom, jaws located below the lower end of the chute, receiving thetubes therefrom, and having their upper ends beveled to lift the columnof tubes when they come together and so isolate the tube gripped by thejaws from the tubes of the column, means for operating the jaws, andstops located below the lower end of the chute for arresting the tubesin position to be gripped by the jaws.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

WILVLIAM MASON.

Witnesses:

FRED. C. EARLE, GEO. D. SEYMOUR.

(No Model.)

J. A. MOSHER. RAIL BOND.

No. 587,134. Patented July 27, 1 897.

